<?php
/**
 * Created by PhpStorm.
 * User: Raymond
 * Date: 2021-07-16
 * Time: 09:45
 */

namespace ood\LMS;


abstract class Book
{
    const STATUS_RESERVED = 2;
    const STATUS_AVAILABLE = 1;
    const STATUS_LOANED = 3;
    private $ISBN;
    private $title;
    private $subject;
    private $publisher;
    private $language;
    private $numberOfPages;
    private $authors;
}